A giant portrait of an ancient king looms over the river.

One of the oldest churches in Romania is believed to have been built on the site of a pagan temple.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

A stone in Wolin, Poland, marks the possible location of a legendary Viking fortress.

An artificial hill and apparent calendric structure built in the Early Middle Ages immortalizes a legendary Polish princess.

These rare statues are one of the few remaining material witnesses to Old Prussian culture.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

Deep in a Polish forest, this collection of Iron Age megaliths still holds onto many of its ancient secrets.

Museum dedicated to "the man who moved the Earth."

A peculiar family mausoleum built by a German nobleman captivated by the occult.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

A mysterious structure left behind on the Polish mountainside, sometimes called "Hitler's Stonehenge".

The site of the first battle of World War II.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

Legions of Roman soldiers bathed in this ancient spa complex under a Budapest transit station.

300 years of pharmaceutical history on display.

An industrial site turned into Hungary's most cherished natural wonder.